Clipper sharpener



p 1931. H. M. BENNETT ET AL 1,824,531

- CLIPPER SHARPENER Filed May 4, 1929 A; wwww -n 7 HoraceMBemzeii SidneyJBoman or sharpening member Patented Sept. 22, 1931 UNITED STATES PATENT OFFICE HORACE M. BENNETT AND SIDNEYJ. BOMAN, OF MARGARET, TEXAS omrrnn SHARPENER Application filed. May 4, 1929, Serial No. 360,506.

Our invention relates to devices for sharpening clippers used in cutting hair or the like, and it is an improvement over our application filed March 10, 1928, Serial No. 260,783.

It is an object of the present invention to provide a device of this character by means of which the upper and lower cutting blades may be sharpened by a single stone instead of requiring a pair of such members, thereby simplifying the construction and reducing the cost 0 manufacture; all as will be hereinafter more particularly specified and claimed.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a side elevation of a conventional hair clipper,

Figure 2, a side elevation of the cutting end of the same, showing our device in position for sharpening the upper blade,

Figure 3, a similar view, with the device in position for sharpening the lower blade,

Figure 41, a transverse section on line of Fig. 2,

Figure 5, a transverse section on line 5-5 of Fig. 3,

Figure 6, a perspective of the key which attaches the sharpeningstone to the respective blades,

Figure 7, a perspective of the stone or sharpening member, and

Figure 8, a perspective of a shim or spacing element for maintaining the blades separated an amount corresponding to the thickness of the sharpening member.

In carrying out our invention, we provide a sharpening member and attach the same by means of a key to the member which is not desired to be sharpened, so that when it is attached to the stationary lower blade it will be held fixed and the reciprocating j upper blade will be sharpened, and on the other hand when it 'is attached to the reciprocable upper blade it will reciprocate with said upper blade and sharpen the stationary lower blade.

In the drawings reference character 10 inblades apart a ening operation, secured to the respectlve blades by means of above the said plates, as shown in Figs. 3 and dicates the body or handle portion of an electric clipper provided with a reciprocable upper blade 11 and a detachable stationary lower blade 12 held in place by a pair of fas- M tening screws 18, allof which are of con- $5 ventional construction. The screws 13 are removed and replaced with screws 14 of sufficient length to extend through a shim or spacing block 15 which serves to space the M suflicient distance to permitao the insertion of a stone or sharpening memf ber16.

The sharpening member 16 is formed of a pair of rectangular abrasive elements mounted at opposite edges of a thin flat plate 17 5 which is of a length corresponding to the width of the lower clipper blade 12 and has a cut-out portion 18, at each end providing a reduced length equivalent to the'width of the In performing the sharpupper blade 11.

the sharpening member is a key 19 provided with upturned ends 20,

the distance between which is equal to the width of the stationary lower key is vprovided on its blade, andsaid ls opposite side witha pair of lugs or bosses 21 of a size to snugly lfitin the cut-out portions 18 of the sharpening element. of the key as shown in The upturned ends. and bosses Figs.2 and 3 are short 'eo enough to prevent interference with the blade being sharpened. In use the bosses21 are always turned toward the upper blade,

and when it is desired to sharpen the upper H blade the body portion 19 of the key is disposed belowthe plate upon which the abrasive members are mounted, as shown in Figs.

2 and 4, and when it is desired to sharpen the lower blade said body portion is disposed 5. It will'be readily understood from the above description that'w'hen' in the position shown in Figs. 2 and a the ends 20 of the key engage opposite sides of the lower or station- 'ary blade and hold the key against movement, while the bosses of the key engage the cut-out portions 18 in the plate 17 and-maintain the sharpening member against movement, whereupon the reciprocation of the upper blade will cause the said upper blade t0 1 be ground by its contact with the sharpening member. Likewise, when the key is in the position shown in Figs. 3 and 5, the bosses engage the reciprocable blade and cause the key to be fixed relative to the blade and the turned over extremities of the key engage the extremities of the supporting plate 17 and hold the sharpening member fixed relative to the key, whereupon the reciprocable member will reciprocate the sharpening member and sharpen the stationary lower blade. The sharpening member is the same on both sides and therefore it does not matter in which manner it is applied, the key being the member which determines the blade that is sharpened.

It will be obvious to those skilled in the art that various changes may be made in our device without departing from the spirit of the invention and we, therefore, do not limit ourselves to what is shown in the drawings and described in the specification, but only as set forth in the appended claims.

Having thus fully described our said invention, what we claim as new and desire to secure by Letters Patent, is:

1. A device for sharpening both blades of a clipper comprising a spacing element for spacing apart the blades of the clipper, an abrasive element corresponding in thickness to the spacing element insertable between the blades for sharpening the same, a key having means on its opposite sides for fastening said abrasive element and either of the blades together thereby preventing relative motion between the same and permitting relative motion between the abrasive element and the other blade, substantially as set forth.

2. A device for sharpening both blades of clippers comprising a pair of rectangular abrasive elements mounted at the opposite edges of a thin flat plate, said plate being of a length to correspond to the width of the lowerblade and provided with a cut-out portion of a length corresponding to the Width of the upper blade, a key provided with up- 7 turned ends on one side and lugs extending outwardly on the opposite sides, when placed on top of the plate having its upturned edges engaging the end of the plate and the lugs engaging the upper blade for securing same together and when placed beneath the plate having its lugs engaging the cut-out portion of the plate and the upturned ends engaging the lower blade thereby securing same together, and means for retaining the element-s in position, substantially as set forth.

In Witness whereof, we have hereunto set our hands at Vernon, Texas, this 30th day of April, A. D. nineteen hundred and twentynine.

HORACE M. BENNETT. SIDNEY J. BOMAN- said key 

